Inconsistency in the "Complete Anarchy Encounters" achievement in Delve.

Hi, i would like to report an inconsistency in the challenge Complete Anarchy Encounters in Delve.

While delving you will occasionally/semi regularly encounter these nodes where 4 to 6 Rogue exiles will run out of tents to kill you.
These exiles have counted towards my "kill rogue exiles (60/60)" seeing as i completed that part of the challenge during one of these nodes.

However the part of the challenge where i need to kill 3 rogue exiles within 10 seconds of the first one dying isnt completing.

Now my initial reaction would be "i didnt kill them fast enough". But even on low depths where the entirety of the fight lasts shorter than my quicksilver flask (7 seconds) i didnt get it, plus due to the nature of my build things tend to go down at equal speeds.

So i think there might be an issue with recognising the delve exiles as exiles, but then why did they count for the other part of the challenge?

The other possibility would be that the timer doesnt function properly because i play a DoT build with Bane, but i cant immagine that wouldve gone unnoticed so far.

I hope this was usefull. Kind regards.

happens to me too

this still seems broken. Also did this outside and didnt' get it.

read carefully.
Kill 3 Rogue Exiles in Maps within 10 seconds of the first one dying